Rocker Pipes
Below Ground Drainage
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Product Details
Sewers for Adoption states you should allow for any differential settlement between the manhole and pipeline, with short lengths of either spigot or socket butt pipes being built into the manhole wall.
A rocker pipe should then be laid connecting the short spigot/socket butt concrete pipe to the incoming/outgoing pipe run, thereby incorporating a flexible joint close to the manhole.
Benefits include:
